Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

Register Log in
  • Congratulations waross on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. eerickson

    Transformer oil sampling under full-load conditions?

    Thanks Scotty, I agree the oil sample should reflect the transformer's condition regardless of whether the sample was taken at full-load or no-load condition.
  2. eerickson

    Transformer oil sampling under full-load conditions?

    All, we've been reviewing our safety procedures and standard practices for taking oil samples on our pad mounted 4.16 kV/0.48 kV transformers. Is there any reason why the sample should be take under full-load conditions?
  3. eerickson

    Could distance from VFD to pump cause problems?

    powersoff, we have similar problems at our facility. Check your VFD’s operational manual for the recommended carrier frequency, and verify this setting on your drive. I found several good references on IEEE Xplore, but really haven’t determined the best design approach for today’s IGBT VFD(s)...
  4. eerickson

    Rating hazardous locations (NEC 70-500).

    I've been given a project where the surrounding area is rated IIG2. The new equipment I am installing is IIG2, but the existing equipment is not rated. Even worse, the non-rated equipment must be moved to make room for the new equipment, but will stay in the same IIG2 location. 1. Am I...
Back
Top